【摘要】 我们研制了一种用于诊断TEACO₂脉冲激光与物质相互作用,以及其它流场中快速现象的高速干涉摄影系统;解决了这一技术中的时间同步、高速摄影机与激光平晶错位干涉仪的光学匹配;提出了逆程序运转方案,将连续输出的He-Ne激光改成了时间可控的脉冲光源;用这一技术拍出了一系列相互作用过程的微秒级高速干涉照片,以及超音速风洞中流场照片。这种技术也能广泛用于其它快速现象及流场显示领域中。更多还原

【Abstract】 A system of high-speed interferograph for investigating the interaction of TEA COz pulsed laser with matter and other fast flow phenomena has been constructed and applied successfully. Problems of the time sychronization and the optical match between highspeed camera and interferometer have been solved. We operated inversely an ordinary CW He-Ne laser to obtain a time-controllable pulsed light source. Several series of highspeed interference photographs of laser-matter interaction and the flow-field in supersonie wind-tunnel have been obtained. This technique may be used in other fast phenomena and flow-field visualization.更多还原